1142234543 has 4 divisors (see below), whose sum is σ = 1145297208. Its totient is φ = 1139171880.

The previous prime is 1142234537. The next prime is 1142234563. The reversal of 1142234543 is 3454322411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142234543 - 2⁶ = 1142234479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142234563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530773 + ... + 1531518.

It is an arithmetic number, because the mean of its divisors is an integer number (286324302).

Almost surely, 2^1142234543 is an apocalyptic number.

1142234543 is a deficient number, since it is larger than the sum of its proper divisors (3062665).

1142234543 is an equidigital number, since it uses as much as digits as its factorization.

1142234543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062664.

The product of its digits is 11520, while the sum is 29.

The square root of 1142234543 is about 33796.9605586064. The cubic root of 1142234543 is about 1045.3260257282.

Adding to 1142234543 its reverse (3454322411), we get a palindrome (4596556954).

The spelling of 1142234543 in words is "one billion, one hundred forty-two million, two hundred thirty-four thousand, five hundred forty-three".